According to a chaplain, Friday’s massacre of 29 Coptic Christians who were on their way to a monastery in Egypt occurred after Islamic radicals marched them off the bus one by one and asked them to deny their faith in Jesus Christ.

A priest identified as Father Rashed, a chaplain for one of the groups comforting the survivors of the attack, said in an article in Breitbart News on Sunday that 10 masked Islamic State militants did not simply open fire on the bus on its way to the Monastery of Saint Samuel the Confessor.

Instead, the IS radicals apparently stopped the bus, made the victims walk out, and asked each of them, including the children, whether they were Christians.

Rashed explained that the victims “were asked to renounce their Christian faith and profess belief in Islam, but all of them — even the children — refused. Each was killed in cold blood with a gunshot to the head or the throat.”